Ball mill at the Bradley Mine mill at Stibnite in Valley County, Idaho circa 1940. This photo gives a close up view of the ball mills which are used to crush ore. The opening and trough where crushed ore exits the mill is clearly shown in the...

Financial records. Included are local sales register for the Emmett and Barber mills (1915-1935); sawing reports; log shipments; annual reports; drawings and specifications of the Emmett and Barber mills; miscellaneous records of the Hallock and...

View of two stationary steam engines. The interior view is well lit and clearly shows the large fly wheels, single cylinders, and connecting pipes and valves that make up the engine. A pile of nuts and bolts lies on the floor.